HomeMy WebLinkAbout06 10 00 Rough CarpentryTHE KENT
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SECTION 06 10 00 - ROUGH CARPENTRY
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. Framing with dimension lumber.
2. Framing with engineered wood products.
3. Rooftop equipment bases and support curbs.
4. Wood blocking and nailers.
5. Utility shelving.
6. Plywood backing panels.
7. Plywood soffit panels.
B. Related Requirements:
1. Section 06 16 00 "Sheathing" for sheathing, subflooring, and underlayment.
2. Section 06 17 53 "Shop-Fabricated Wood Trusses" for wood trusses made from
dimension lumber.
3. Section 31 31 16 "Termite Control" for site application of borate treatment to wood
framing.
1.3 DEFINITIONS
A. Boards or Strips: Lumber of less than 2 inches nominal size in least dimension.
B. Dimension Lumber: Lumber of 2 inches nominal size or greater but less than 5 inches nominal
size in least dimension.
C. Exposed Framing: Framing not concealed by other construction.
D. OSB: Oriented strand board.
1.4 ACTION SUBMITTALS
A. Product Data: For each type of process and factory-fabricated product. Indicate component
materials and dimensions and include construction and application details.
1. Include data for wood-preservative treatment from chemical treatment manufacturer and
certification by treating plant that treated materials comply with requirements. Indicate
type of preservative used and net amount of preservative retained.
2. For products receiving a waterborne treatment, include statement that moisture content
of treated materials was reduced to levels specified before shipment to Project site.
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1.5 INFORMATIONAL SUBMITTALS
A. Material Certificates: For dimension lumber specified to comply with minimum allowable unit
stresses. Indicate species and grade selected for each use and design values approved by the
ALSC Board of Review.
B. Evaluation Reports: For the following, from ICC-ES:
1. Wood-preservative-treated wood.
2. Fire-retardant-treated wood.
3. Engineered wood products.
4. Power-driven fasteners.
5. Post-installed anchors.
6. Metal framing anchors.
1.6 QUALITY ASSURANCE
A. Testing Agency Qualifications: For testing agency providing classification marking for fire-
retardant treated material, an inspection agency acceptable to authorities having jurisdiction that
periodically performs inspections to verify that the material bearing the classification marking is
representative of the material tested.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Stack wood products flat with spacers beneath and between each bundle to provide air
circulation. Protect wood products from weather by covering with waterproof sheeting, securely
anchored. Provide for air circulation around stacks and under coverings.
PART 2 - PRODUCTS
2.1 WOOD PRODUCTS, GENERAL
A. Lumber: DOC PS 20 and applicable rules of grading agencies indicated. If no grading agency is
indicated, comply with the applicable rules of any rules-writing agency certified by the ALSC
Board of Review. Grade lumber by an agency certified by the ALSC Board of Review to inspect
and grade lumber under the rules indicated.
1. Factory mark each piece of lumber with grade stamp of grading agency.
2. For exposed lumber indicated to receive a stained or natural finish, mark grade stamp on
end or back of each piece.
3. Dress lumber, S4S, unless otherwise indicated.
B. Maximum Moisture Content of Lumber: 19 percent unless otherwise indicated.
C. Engineered Wood Products: Acceptable to authorities having jurisdiction and for which current
model code research or evaluation reports exist that show compliance with building code in
effect for Project.
1. Allowable design stresses, as published by manufacturer, shall meet or exceed those
indicated. Manufacturer's published values shall be determined from empirical data or by
rational engineering analysis and demonstrated by comprehensive testing performed by
a qualified independent testing agency.
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2.2 WOOD-PRESERVATIVE-TREATED LUMBER
A. Preservative Treatment by Pressure Process: AWPA U1; Use Category UC2 for interior
construction not in contact with ground, Use Category UC3b for exterior construction not in
contact with ground, and Use Category UC4a for items in contact with ground.
1. Preservative Chemicals: Acceptable to authorities having jurisdiction and containing no
arsenic or chromium. Do not use inorganic boron (SBX) for sill plates.
2. For exposed items indicated to receive a stained or natural finish, chemical formulations
shall not require incising, contain colorants, bleed through, or otherwise adversely affect
finishes.
B. Kiln-dry lumber after treatment to a maximum moisture content of 19 percent. Do not use
material that is warped or that does not comply with requirements for untreated material.
C. Mark lumber with treatment quality mark of an inspection agency approved by the ALSC Board
of Review.
1. For exposed lumber indicated to receive a stained or natural finish, mark end or back of
each piece.
D. Application: Treat items indicated on Drawings, and the following:
1. Wood cants, nailers, curbs, equipment support bases, blocking, stripping, and similar
members in connection with roofing, flashing, vapor barriers, and waterproofing.
2. Wood sills, sleepers, blocking, and similar concealed members in contact with masonry
or concrete.
3. Wood framing and furring attached directly to the interior of below-grade exterior masonry
or concrete walls.
4. Wood floor plates that are installed over concrete slabs-on-grade.
E. Fire-Retardant-Treated Lumber and Plywood by Pressure Process: Products with a flame-
spread index of 25 or less when tested according to ASTM E 84, and with no evidence of
significant progressive combustion when the test is extended an additional 20 minutes, and with
the flame front not extending more than 10.5 feet beyond the centerline of the burners at any
time during the test.
1. Treatment shall not promote corrosion of metal fasteners.
2. Exterior Type: Treated materials shall comply with requirements specified above for fire-
retardant-treated lumber and plywood by pressure process after being subjected to
accelerated weathering according to ASTM D 2898. Use for exterior locations and where
indicated.
3. Interior Type A: Treated materials shall have a moisture content of 28 percent or less
when tested according to ASTM D 3201 at 92 percent relative humidity. Use where
exterior type is not indicated.
4. Design Value Adjustment Factors: Treated lumber shall be tested according to
ASTM D 5664 and design value adjustment factors shall be calculated according to
ASTM D 6841. For enclosed roof framing, framing in attic spaces, and where high
temperature fire-retardant treatment is indicated, provide material with adjustment factors
of not less than 0.85 modulus of elasticity and 0.75 for extreme fiber in bending for
Project's climatological zone.
2.3 FIRE-RETARDANT-TREATED MATERIALS
A. General: Where fire-retardant-treated materials are indicated, materials shall comply with
requirements in this article, that are acceptable to authorities having jurisdiction, and with fire-
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test-response characteristics specified as determined by testing identical products per test
method indicated by a qualified testing agency.
B. Fire-Retardant-Treated Lumber and Plywood by Pressure Process: Products with a flame-
spread index of 25 or less when tested according to ASTM E 84, and with no evidence of
significant progressive combustion when the test is extended an additional 20 minutes, and with
the flame front not extending more than 10.5 feet beyond the centerline of the burners at any
time during the test.
1. Treatment shall not promote corrosion of metal fasteners.
2. Exterior Type: Treated materials shall comply with requirements specified above for fire-
retardant-treated lumber and plywood by pressure process after being subjected to
accelerated weathering according to ASTM D 2898. Use for exterior locations and where
indicated.
3. Interior Type A: Treated materials shall have a moisture content of 28 percent or less
when tested according to ASTM D 3201 at 92 percent relative humidity. Use where
exterior type is not indicated.
C. Kiln-dry lumber after treatment to maximum moisture content of 19 percent. Kiln-dry plywood
after treatment to maximum moisture content of 15 percent.
D. Identify fire-retardant-treated wood with appropriate classification marking of qualified testing
agency.
1. For exposed lumber indicated to receive a stained or natural finish, mark end or back of
each piece or omit marking and provide certificates of treatment compliance issued by
testing agency.
E. For exposed items indicated to receive a stained or natural finish, chemical formulations shall
not bleed through, contain colorants, or otherwise adversely affect finishes.
F. Application: Treat items indicated on Drawings, and the following:
1. Concealed blocking.
2. Plywood panels.
2.4 DIMENSION LUMBER FRAMING
A. Partitions:
1. Application: Exterior walls, load-bearing interior walls, joist and shear walls.
2. Size: 2 x 4 and 2 x 6.
3. Species:
a. Hem-fir (north); NLGA, No.1/No.2 grade.
b. Southern pine; SPIB, No.1 grade.
c. Douglas fir-larch; WCLIB or WWPA, No.2 grade.
d. Southern pine or mixed southern pine; SPIB, No.1 grade.
e. Spruce-pine-fir; NLGA, No.1/No.2 grade.
f. Douglas fir-south; WWPA, No.1 grade.
g. Hem-fir; WCLIB or WWPA, No.1 and better grade.
h. Douglas fir-larch (north); NLGA, No.1 and better grade.
B. Headers, Beams, Joists, Rafters, Studs and Other Framing Not Listed Above:
1. Size: 2 x 8 and larger.
2. Species:
a. Southern pine; SPIB, No.1 grade.
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2.5 ENGINEERED WOOD PRODUCTS
A. Composite Wood Products: Products shall be made without urea formaldehyde.
B. Source Limitations: Obtain each type of engineered wood product from single source from a
single manufacturer.
C. Laminated-Veneer Lumber: Structural composite lumber made from wood veneers with grain
primarily parallel to member lengths, evaluated and monitored according to ASTM D 5456 and
manufactured with an exterior-type adhesive complying with ASTM D 2559.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to
the following:
a. Boise Cascade Corporation.
b. Georgia-Pacific Building Products.
c. Louisiana-Pacific Corporation.
d. Weyerhaeuser Company.
2. Extreme Fiber Stress in Bending, Edgewise: 2600 psi for 12-inch nominal- depth
members.
3. Modulus of Elasticity, Edgewise: 1,800,000 psi.
D. Parallel-Strand Lumber: Structural composite lumber made from wood strand elements with
grain primarily parallel to member lengths, evaluated and monitored according to ASTM D 5456
and manufactured with an exterior-type adhesive complying with ASTM D 2559.
1. Manufacturers: Subject to compliance with requirements, available manufacturers
offering products that may be incorporated into the Work include, but are not limited to
the following:
a. Louisiana-Pacific Corporation.
b. Weyerhaeuser Company.
2. Beams and Header Grade: 2.0E.
3. Columns and Posts Grade: 1.8E.
2.6 MISCELLANEOUS LUMBER
A. General: Provide miscellaneous lumber indicated and lumber for support or attachment of other
construction, including the following:
1. Blocking.
2. Nailers.
3. Rooftop equipment bases and support curbs.
4. Cants.
5. Utility shelving.
B. Dimension Lumber Items: Construction or No. 2 grade lumber of any of the following species:
1. Hem-fir (north); NLGA.
2. Mixed southern pine or southern pine; SPIB.
3. Spruce-pine-fir; NLGA.
4. Hem-fir; WCLIB or WWPA.
5. Spruce-pine-fir (south); NeLMA, WCLIB, or WWPA.
6. Western woods; WCLIB or WWPA.
7. Northern species; NLGA.
8. Eastern softwoods; NeLMA.
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C. Utility Shelving: Lumber with 19 percent maximum moisture content of any of the following
species and grades:
1. Western white pine, Idaho white, lodgepole, ponderosa, or sugar pine; No. 2 Common
(Sterling) grade; NeLMA, NLGA, WCLIB, or WWPA.
2. Mixed southern pine or southern pine; No. 2 grade; SPIB.
3. Hem-fir or hem-fir (north); No. 1 Common grade; NLGA, WCLIB, or WWPA.
4. Spruce-pine-fir (south) or spruce-pine-fir; Construction or No. 2 Common grade; NeLMA,
NLGA, WCLIB, or WWPA.
D. For blocking not used for attachment of other construction, Utility, Stud, or No. 3 grade lumber
of any species may be used if it is cut and selected to eliminate defects that will interfere with its
attachment and purpose.
E. For blocking and nailers used for attachment of other construction, select and cut lumber to
eliminate knots and other defects that will interfere with attachment of other work.
2.7 PLYWOOD PANELS
A. Equipment Backing Panels: Plywood, DOC PS 1, Exterior, C-C Plugged, in thickness indicated
or, if not indicated, not less than 3/4-inch nominal thickness.
B. Plywood Soffit Panels: DOC PS 1, Exterior, C-C Plugged, 3/8- inch thick with continuous soffit
vents.
1. Continuous Soffit Vent: Tamyln 2” Snapvents with 9 NFA per lineal foot.
2.8 FASTENERS
A. General: Fasteners shall be of size and type indicated and shall comply with requirements
specified in this article for material and manufacture.
1. Where rough carpentry is exposed to weather, in ground contact, pressure-preservative
treated, or in area of high relative humidity, provide fasteners with hot-dip zinc coating
complying with ASTM A 153.
B. Nails: ASTM F 1667.
C. Power-Driven Fasteners: Fastener systems with an evaluation report acceptable to authorities
having jurisdiction, based on ICC-ES AC70.
D. Post-Installed Anchors: Fastener systems with an evaluation report acceptable to authorities
having jurisdiction, based on ICC-ES AC01 ICC-ES AC58 ICC-ES AC193 or ICC-ES AC308 as
appropriate for the substrate.
1. Material: Carbon-steel components, zinc plated to comply with ASTM B 633,
Class Fe/Zn 5.
2. Material: Stainless steel with bolts and nuts complying with ASTM F 593 and
ASTM F 594, Alloy Group 1 or 2.
2.9 METAL FRAMING ANCHORS
A. Basis of Design Product: Subject to compliance with requirements, provide product indicated
on Drawings or comparable product by one of the following:
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1. Simpson Strong-Tie co, Inc.
B. Allowable design loads, as published by manufacturer, shall meet or exceed those of basis-of-
design products. Manufacturer's published values shall be determined from empirical data or by
rational engineering analysis and demonstrated by comprehensive testing performed by a
qualified independent testing agency. Framing anchors shall be punched for fasteners adequate
to withstand same loads as framing anchors.
C. Galvanized-Steel Sheet: Hot-dip, zinc-coated steel sheet complying with ASTM A 653, G60
coating designation.
1. Use for interior locations unless otherwise indicated.
D. Post Bases: Adjustable-socket type for bolting in place with standoff plate to raise post 1 inch
above base and with 2-inch- minimum side cover, socket 0.062-inch-thick, and standoff and
adjustment plates 0.108 inch thick.
E. Floor-to-Floor Ties: Flat straps, with holes for fasteners, for tying upper floor wall studs to band
joists and lower floor studs, 1-1/4 inches wide by 0.050-inch-thick by 36 inches long.
F. Hold-Downs: Brackets for bolting to wall studs and securing to foundation walls with anchor
bolts or to other hold-downs with threaded rods and designed with first of two bolts placed
seven bolt diameters from reinforced base.
1. Basis of Design products indicated on Drawings.
2.10 MISCELLANEOUS MATERIALS
A. Sill-Sealer Gaskets: Glass-fiber-resilient insulation, fabricated in strip form, for use as a sill
sealer; 1-inch nominal thickness, compressible to 1/32 inch; selected from manufacturer's
standard widths to suit width of sill members indicated.
PART 3 - EXECUTION
3.1 INSTALLATION, GENERAL
A. Framing Standard: Comply with AF&PA's WCD 1, "Details for Conventional Wood Frame
Construction," unless otherwise indicated.
B. Framing with Engineered Wood Products: Install engineered wood products to comply with
manufacturer's written instructions.
C. Set rough carpentry to required levels and lines, with members plumb, true to line, cut, and
fitted. Fit rough carpentry accurately to other construction. Locate nailers, blocking, and similar
supports to comply with requirements for attaching other construction.
D. Install plywood backing panels by fastening to studs; coordinate locations with utilities requiring
backing panels.
E. Install metal framing anchors to comply with manufacturer's written instructions. Install fasteners
through each fastener hole.
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F. Install sill sealer gasket to form continuous seal between sill plates and foundation walls.
G. Do not splice structural members between supports unless otherwise indicated.
H. Provide blocking and framing as indicated and as required to support facing materials, fixtures,
specialty items, and trim.
1. Provide metal clips for fastening gypsum board or lath at corners and intersections where
framing or blocking does not provide a surface for fastening edges of panels. Space clips
not more than 16 inches o.c.
I. Provide fire blocking in furred spaces, stud spaces, and other concealed cavities as indicated
and as follows:
1. Fire block furred spaces of walls, at each floor level, at ceiling, and at not more than 96
inches o.c. with solid wood blocking or non-combustible materials accurately fitted to
close furred spaces.
2. Fire block concealed spaces of wood-framed walls and partitions at each floor level, at
ceiling line of top story, and at not more than 96 o.c. Where fire blocking is not inherent in
framing system used, provide closely fitted solid wood blocks of same width as framing
members and 2-inch nominal thickness.
3. Fire block concealed spaces behind combustible cornices and exterior trim at not more
than 20 fee o.c.
J. Sort and select lumber so that natural characteristics do not interfere with installation or with
fastening other materials to lumber. Do not use materials with defects that interfere with function
of member or pieces that are too small to use with minimum number of joints or optimum joint
arrangement.
K. Comply with AWPA M4 for applying field treatment to cut surfaces of preservative-treated
lumber.
1. Use copper naphthenate for items not continuously protected from liquid water.
L. Where wood-preservative-treated lumber is installed adjacent to metal decking, install
continuous flexible flashing separator between wood and metal decking.
M. Securely attach rough carpentry work to substrate by anchoring and fastening as indicated,
complying with the following:
1. Table 2304.9.1, "Fastening Schedule," in ICC's International Building Code (IBC).
2. ICC-ES evaluation report for fastener.
N. Use steel common nails unless otherwise indicated. Select fasteners of size that will not fully
penetrate members where opposite side will be exposed to view or will receive finish materials.
Make tight connections between members. Install fasteners without splitting wood. Drive nails
snug but do not countersink nail heads unless otherwise indicated.
3.2 WOOD BLOCKING, AND NAILER INSTALLATION
A. Install where indicated and where required for screeding or attaching other work. Form to
shapes indicated and cut as required for true line and level of attached work. Coordinate
locations with other work involved.
B. Attach items to substrates to support applied loading. Recess bolts and nuts flush with surfaces
unless otherwise indicated.
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C. Provide permanent grounds of dressed, pressure-preservative-treated, key-beveled lumber not
less than 1-1/2 inches wide and of thickness required to bring face of ground to exact thickness
of finish material. Remove temporary grounds when no longer required.
3.3 WALL AND PARTITION FRAMING INSTALLATION
A. General: Provide single bottom plate and double top plates using members of 2-inch nominal
thickness whose widths equal that of studs. Fasten plates to supporting construction unless
otherwise indicated.
1. For exterior walls, see Drawings for size and spacing.
2. For interior partitions and walls, see Drawings for size and spacing.
3. Provide continuous horizontal blocking at mid-height of partitions more than 96 inches
high, using members of 2-inch nominal thickness and of same width as wall or partitions.
B. Construct corners and intersections with three or more studs, except that two studs may be
used for interior non-load-bearing partitions.
C. Frame openings with multiple studs and headers. Provide nailed header members of thickness
equal to width of studs. Support headers on jamb studs.
1. For non-load-bearing partitions, provide double-jamb studs and headers not less than 4-
inch nominal depth for openings 48 inches and less in width, 6-inch nominal depth for
openings 48 to 72 inches in width, 8-inch nominal depth for openings 72 to 120 inches in
width, and not less than 10-inch nominal depth for openings 10 to 12 feet in width.
2. For load-bearing walls, provide double-jamb studs for openings 60 inches and less in
width, and triple-jamb studs for wider openings. Provide headers of depth indicated or, if
not indicated, according to Table R502.5(1) or Table R502.5(2), as applicable, in ICC's
International Residential Code for One- and Two-Family Dwellings.
3.4 CEILING JOIST AND RAFTER FRAMING INSTALLATION
A. Ceiling Joists: Install with crown edge up and complying with requirements specified above for
floor joists. Face nail to ends of parallel rafters.
1. Where ceiling joists are at right angles to rafters, provide additional short joists parallel to
rafters from wall plate to first joist; nail to ends of rafters and to top plate, and nail to first
joist or anchor with framing anchors or metal straps. Provide 1-by-8-inch nominal size or
2-by-4-inch nominal size stringers spaced 48 inches o.c. crosswise over main ceiling
joists.
B. Rafters: Notch to fit exterior wall plates and use metal framing anchors. Double rafters to form
headers and trimmers at openings in roof framing, if any, and support with metal hangers.
Where rafters abut at ridge, place directly opposite each other and nail to ridge member or use
metal ridge hangers.
1. At valleys, provide double-valley rafters of size indicated or, if not indicated, of same
thickness as regular rafters and 2 inches deeper. Bevel ends of jack rafters for full
bearing against valley rafters.
2. At hips, provide hip rafter of size indicated or, if not indicated, of same thickness as
regular rafters and 2 inches deeper. Bevel ends of jack rafters for full bearing against hip
rafter.
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C. Provide collar beams (ties) as indicated or, if not indicated, provide 1-by-6-inch nominal size
boards between every third pair of rafters, but not more than 48 in o.c. Locate below ridge
member, at third point of rafter span. Cut ends to fit roof slope and nail to rafters.
D. Provide special framing as indicated for eaves, overhangs, dormers, and similar conditions if
any.
3.5 STAIR FRAMING INSTALLATION
A. Provide stair framing members of size, space, and configuration indicated or, if not indicated, to
comply with the following requirements:
1. Size: 2-by-12-inch nominal size, minimum.
2. Material: Laminated-veneer lumber or solid lumber.
3. Notching: Notch rough carriages to receive treads, risers, and supports; leave at least 3-
1/2 inches of effective depth.
4. Spacing: At least three framing members for each 36-inch clear width of stair.
B. Provide stair framing with no more than 3/16-inch variation between adjacent treads and risers
and no more than 3/8-inch variation between largest and smallest treads and risers within each
flight.
C. Design Loading:
1. Live Load: 100 psf (uniform), 300 pounds (concentrated).
a. Uniform loads and concentrated loads do not act concurrently.
2. Dead Load: 10 psf superimposed.
3.6 PROTECTION
A. Protect wood that has been treated with inorganic boron (SBX) from weather. If, despite
protection, inorganic boron-treated wood becomes wet, apply EPA-registered borate treatment.
Apply borate solution by spraying to comply with EPA-registered label.
B. Protect rough carpentry from weather. If, despite protection, rough carpentry becomes wet,
apply EPA-registered borate treatment. Apply borate solution by spraying to comply with EPA-
registered label.
END OF SECTION 06 10 00